<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout android:id="@id/main" android:layout_width="fill_parent" android:layout_height="fill_parent"
  xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
    <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent">
        <Button android:id="@id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button" />
        <Switch android:id="@id/switch1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:checked="false" android:text="自动返回" />
        <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent">
            <Button android:id="@id/button3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="无障碍设置" />
            <Button android:id="@id/button4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="顶顶顶顶" />
        </LinearLayout>
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
